Clamp



El# N H. RINN, JR.'

CLAMP.

`APPLICATION FILED AUG, 2l. 1919.

Patented Deo. 7, 1920.

Bni/'J MMN` UNITED STATES HENRY RINN, JR., OF ELKRIDGE, MARYLAND.

CLAMP.

Specification of Letters Patent. l

rai-.enten nec. v, 1920.

Application filed August 21, 1919. Serial No. 318,971.

To alli/17mm t may concern: Y

Be it known that I, HENRY RTNN, JR., a citizen of the United States, residin at Elkridge, in the county of Howard and tate of Maryland, have invented certain new and useful Improvements in Clamps, of which the following is a specification.

This invention relates to new and useful improvements in clamps.

An important object of the invention is to provide a clamp for use in inserting springs in the spring casings of phonographs, mechanical toys or the like.

As is well known bv those familiar with the art, these springs as shipped from the factory are surrounded by a binding wire which must be removed. As it is impossible to remove this binding wire after the spring has been placed in position, this operation must take place prior to the placing of the spring with the consequent result that the spring is released and is very difficult to place in the casing. In accordance with my invention, I have provided a clamp, the structure of which is such that it holds the spring during the operation of removing the binding wire and which at the same time is so formed as to allow of insertion of the spring in the vcasing without removing the clamp therefrom.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a plan view of a spring casing and the spring showin the use of my clamp in inserting the spring into position,

Fig. 2 is a side elevation thereof,

Fig. 3 is a fragmentary sectional view showing how the peculiar structure of the clamp allows of insertion of the spring with the clamp in position, and,

Fig. 4 is a view showing a spring with the binding wire in place and indicating by dotted lines how the clamp is used in removing the binding wire from the spring.

Referring now more particularly to the drawings, the numeral 10 designates a spring of the clockwork type, the spring being held coiled by means of a binding wire 11.. The numeral 12 indicates the spring casing having/Ian out-turned rim portion 13.

y clamp comprises clamping members 14 and 15. The clamping member 15 is provided with threaded openings 16 and 17, adapted to receive adjusting screws 18 and 19, respectively.

The screws 18 and 19 are provided with squared heads 2O and 21, by which the screws may be moved to adjust the clamping members 14 and 15. The screw 18 extends through the threaded opening 16 and engages in a socket 22 formed in the member 14 and the screw 19 extends through an opening 23 formed in the member 14 and engages in the threaded opening 17 of the member 15. As thus far described, my clamp in on way differs from the usual construction of adjustable clamp in common use.

The jaws 24 of the clamping members 14 and 15 are much reduced in size, forming a very thin jaw and the upper end of the jaw, where it swells to the normal size of the clamping members is so shaped that it fits Vthe curve of the outstanding rim of the spring casing 12. As these casings are somewhat tapered, the outer faces of the jaws 24 are also slightly tapered so as to form a fit therewith.

The outer free end of the spring 10 is prow vided with a grooved outstanding portion 10 having an aperture therein which receives an outstanding portion 12 secured to the inner face of the spring casing 12. In placing the spring in position, these two portions are brought into proper position and a pin inserted to hold them in this position.

It will be readily seen that by the use of my clamp, it is possible to insert a spring in the casing without injury to the hand and that the minimum expenditure of labor thus materially cut down, the time consumed in the assembly of the spring and casing and consequently the cost of manufacture.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement ofparts may be re sorted to without departing from the spirit of the invention or the scope of the subj oined claim.

Having thus described my invention, I claim:

A clamp for placing springs in the spring casings, of spring motors comprising a pair of substantially parallel clamping elements, consisting of relatively thick body portions and relatively thin jaws, the body portions being provided at their outer ends A with the shoulders of the parallel Clamping eleshoulders extending inwardly at substanments. 10 l tially a right angle to the axis of said ele- In testimony whereof- I alix my signature ments, the jaws having inner surfaces which in presence of two witnesses.

are substantially parallel and outer surfaces HENRY RINN, JR. tapering inwardly away from the body por- Witnesses:

tions and terminating at their inner ends in W. H. EVANS,

. outwardly curved portions connecting with WM. SHRIEVER. 

